Method of making compositions for coating.



' NEtZtESM'iEh net are earch ROBERT D. rownns, or new YORK, n. Y., assienon To union eras :Pnonn'crs come/an A oonrona'rion on NEW JERSEY.

METHOD OF MAKING CGMPOSITIONS FOR COATII$ oassoi.

No Drawing. Application filed. January ajiaos, Serial 1%. 409,234. Renewed fientei'nbel' 2?, an Serial.

Specification of Letters Patent.

Eatented Jean. flit, than.

.To all whom 'it may concern:

Be it known that I, R BERT DQ'POXVERS, a citizen of the United States, residing at New York city, inthe county of New York and erties, and with this is combined sulfur or a substance" containing sulfur, and the materials are heated until the sulfur begins to temperature State of New York,'have invented certain new and useful Improvements in Methods of Making Compositions for. Coating, &c., of which the following'is a specification.

My invention relates to the manufacture of a composition of matter suitable for waterproof coatings and other purposes, and my invention consistsin the method of production hereinatter set Iorth.

' The basis of the composition is clay, on account of its cheapness and resistant propsublimate, when a suitable vulcanizable oil is added and the whole thoroughly mixed. T he oil employed may be cotton seed oil, linseed oil, rosin oil or any oil capa le of combining with sulfur-to be'vulcanized thereby, and to produce the deeiredcomposition the oil is added as the heat begins to" drive oft the sulfur which then will combine with theoil. The employed willgenerally be from 400 to 450 Fahrenheit, and the oil will be by Weight from five to twenty per cent. of

the weight of theclay, and the hardness of thecomposit'ion will increase in proportion to the reduction in the percentage of the oil and increase of temperature at which the admixtureis etieeted,and by continuing the application of heat during the working a further hardened product is secured? In place of combining sulfur with the clay,

a substance containingsulfur, as sulfid of iron, maybe usd, and the-temperature at which the admixture. of the materials is efiected may be reduced by adding a small proportion, say one per cent, or charcoal or other suitable carbonaceous material.

lVhile the combination of clay and suifur may bemade artificially it is practicable to make use of natural combinations of these materials as found in some "classes of clays. For instance what is known as Long Island blue clay may be employed, the same con-' taining argillaceous material combined with sultld of iron finely distributed throughoutthe mass, with a small proportion of ligneous material. I have found thatby the use of i this blue clay drying and pulverizing the same, heating, and vadding from five to twenty per centaof rosin oil, a most desirable a composition for coating and other purposes having clay for its base the same consisting in heating blue clay containing sulfidof iron, adding oil in less proportion'than the clay as the sulfur in the clay begins to sublimate, and then workingthe materials until thoroughly mixed.

in testimonywhereof I afiiit my signature in presence of two witnesses.

' ROBERT D. PQWERS.

Witnesses:-

Jon'N C. GRAY, EDWIN TAYLOR. 

